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Employee Stock Benefit Plans (Narrative) (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 30, 2016
USD ($)
$ / shares
shares
Jan. 01, 2016
USD ($)
$ / shares
shares
Jan. 02, 2015
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock Issued During Period, Value, Employee Stock Purchase Plan | $ $ 19.1 $ 18.1 $ 16.4
Total intrinsic value of options exercised | $ 36.0 $ 13.9 $ 61.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | $ $ 88.9    
Total unamortized compensation expense weighted-average recognition period, in years 2 years 4 months 28 days    
Stock Plan Assumed Through Acquisition [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock plan acquired 1    
1990 Stock Option Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future grant 0    
Two Thousand Two Stock Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares authorized for grant 62,600,000    
Shares available for future grant 7,700,000    
Percentage of fair market value of Common Stock 100.00%    
Share units granted vesting period, in years 4 years    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 7 years    
2002 Stock Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future grant 0    
1992 Employee Stock Bonus Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future grant 1,606    
Options to purchase, number of shares outstanding 0    
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 2,100,000    
Weighted Average Grant-Date Fair Value, Granted | $ / shares $ 26.13    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ / shares $ 26.13 $ 23.22 $ 30.18
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ $ 33.6 $ 16.3 $ 3.9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 4,700,000 4,300,000  
Restricted Stock Units (RSUs) [Member] | Two Thousand Two Stock Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share units granted vesting period, in years 4 years    
Grants Shares Per Unit on Plan Reserve 1.69    
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Grant-Date Fair Value, Granted | $ / shares $ 6.51 $ 5.24 $ 8.32
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options to purchase, number of shares outstanding 7,600,000 11,600,000  
Weighted average grant-date fair value of stock options granted | $ / shares $ 6.03 $ 7.36 $ 9.07
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $ $ 14.6 $ 18.3 $ 20.5
Non Employee Director Stock Options [Member] | Two Thousand Two Stock Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share units granted vesting period, in years 1 year    
Market Based Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant-date fair value of stock options granted | $ / shares $ 27.09 $ 31.60  
Market-based and Performance-based Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 700,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 1,100,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 0    
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares authorized for grant 39,100,000    
Percentage of lower fair market value to be purchased of common stock through payroll deductions 85.00%    
Employee stock options granted term, in months 6 months    
Shares issued 1,100,000 1,000,000 700,000
Shares available for future grant 9,800,000